Psychophysiological changes associated with self-regulation of sleepiness and cessation from a hazard perception task

Watling, Christopher N., Smith, Simon S., & Horswill, Mark S. (2016) Psychophysiological changes associated with self-regulation of sleepiness and cessation from a hazard perception task. Journal of Psychophysiology, 30(2), pp. 66-75.

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Abstract

The relationship between a driver’s ability to identify increasing sleepiness and ceasing driving when sleepy is relatively unexamined. Several studies suggest that drivers have some ability to identify increasing levels of sleepiness. However, whether that identification of sleepiness leads to drivers being able to self-regulate and cease driving has not been examined. This study assessed the capacity of drivers to identify sleepiness and to self-regulate their own simulated driving cessation. Twenty-six young adults completed a validated hazard perception simulated task when moderately sleep deprived after a 05:00 wake up. Participants were instructed to stop driving if they thought they were too sleepy to drive safely on the road. Physiological (EEG, EOG, and ECG) and subjective (Karolinska Sleepiness Scale) measures were used to examine self-regulation of simulated driving cessation. The behavioural validity of the participants’ subjective sleepiness was then examined with a 30 minute nap opportunity. All participants ceased the task on average after approximately 40 minutes (range = 12.5-73 mins). No participant was judged to have experienced any microsleeps or fallen asleep. Subjective sleepiness and EOG-based blink duration measures increased significantly from the beginning of the drive to the end of the simulated driving episodes. During the nap opportunity 23 of the 26 participants were able to achieve sleep onset. The results suggest that moderately sleep deprived individuals can identify increasing sleepiness and then take action to cease a hazard perception task. Potentially, on-road drivers could benefit from better elicitation of subjective sleepiness and their self-regulation of driving cessation.

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ID Code: 84898
Item Type: Journal Article
Refereed: Yes
Keywords: driver sleepiness, awareness, physiological sleepiness, subjective sleepiness, nap break
DOI: 10.1027/0269-8803/a000156
ISSN: 2151-2124
Subjects: Australian and New Zealand Standard Research Classification > PSYCHOLOGY AND COGNITIVE SCIENCES (170000) > PSYCHOLOGY (170100) > Biological Psychology (Neuropsychology Psychopharmacology Physiological Psychology) (170101)
Australian and New Zealand Standard Research Classification > PSYCHOLOGY AND COGNITIVE SCIENCES (170000) > COGNITIVE SCIENCE (170200) > Decision Making (170202)
Australian and New Zealand Standard Research Classification > PSYCHOLOGY AND COGNITIVE SCIENCES (170000) > COGNITIVE SCIENCE (170200) > Cognitive Science not elsewhere classified (170299)
Australian and New Zealand Standard Research Classification > PSYCHOLOGY AND COGNITIVE SCIENCES (170000) > OTHER PSYCHOLOGY AND COGNITIVE SCIENCES (179900) > Psychology and Cognitive Sciences not elsewhere classified (179999)
Divisions: Current > Research Centres > Centre for Accident Research & Road Safety - Qld (CARRS-Q)
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Psychology & Counselling
Copyright Owner: Copyright 2015 Hogrefe Publishing Corp.
Copyright Statement: This article does not exactly replicate the final version published in the journal "Journal of Psychophysiology". It is not a copy of the original published article and is not suitable for citation.
Deposited On: 31 May 2016 22:46
Last Modified: 28 Aug 2016 17:36

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